Mobile phones: pros and cons
Mobile phones: pros and cons
The purpose of work I. Determine the most popular mobile phone models and find out why people choose them
The purpose of work
I. Determine the most popular mobile phone models and find out why people choose them.
II. Determine in which purpose people use mobile phones more often.
III. Find out if there any influence of mobile phones on human’s health; If it is dangerous; how to protect your health.
The history of invention 1947 - the
The history of invention
1947 - the Research Laboratory of Bell Laboratories (owned by AT & T) has proposed to create a mobile phone.
1957– L.I. Kupriyanovich (USSR) has created an experimental model of mobile phone LK-1 weighing 3 kg and a base station to it relating to the CTA. In the following sample weight 1958 mobile phone has been reduced to 0.5 kg.
1966 - Bulgaria presented the exhibition "Interorgtehnika-66" prototype of Portable networks - mobile phone RAT-0,5 and ATRT-0,5 and base station Ratz-10 for 6 users.
1973 - they released their first prototype of a portable cellular phone - Motorola DynaTAC.
1989 - there was released on a cell phone Motorola MicroTAC with flip (his microphone was placed in the flip cover).
1993 - made the first cell phone with a built-in clock Benefon Beta.
1996- The first cell phone in the form factor «clamshell» - Motorola StarTAC. This phone is a great success in the U.S. and Europe.
1997 - released a cell phone Philips Spark is able to work 350 hours per charge.
1998 - The first mobile phone with touch screen - Sharp PMC-1 Smart-phone.
1999 - released the phone supporting WAP - Nokia 7110.
SIM-cards Benefon Twin +. 1999 - first cell phone in the slide form factor
1999 - released cell phone with the use of two SIM-cards Benefon Twin +.
1999 - first cell phone in the slide form factor Siemens SL10.
2000 - The first mobile phone supporting Internet Times (Swatch) - Ericsson T20.
2002 - the first cell phone in the form factor of a rotator - Motorola V70.
2002 - The first mobile phone with built-in digital camera - Samsung V200.
2002 - the company Ericsson has released the first mobile phone supporting Bluetooth.
2000 - the first cell phone that has GPS-receiver - Benefon ESC.
2000 - the first cell phone with polyphony (Sony J5)
2000 - Japanese company Sharp together with mobile operator J-Phone launched the first mobile phones with built-in camera.
2000 - first cell phone having MP3-player and supporting memory cards MultiMediaCard Siemens SL45.
2001 - the first mobile phone designed specifically for women - Samsung SGH-A400.
2002 - the company Ericsson has released the first mobile phone with support for Bluetooth.
2002 - The first mobile phone with EDGE - Nokia 6200 (Nokia 6220).
2009 - in sale 12.1Mp camera phone - Samsung Pixon12 M8910.
Kupriyanovich with mobile phone
Kupriyanovich with mobile phone LK-1 in the car
Kupriyanovich and LK-1 with the battery
Motorola DynaTAC 8000x
Motorola MicroTAC Sharp PMC-1 smart-phone
Motorola MicroTAC
Sharp PMC-1 smart-phone
Benefon Twin +
Siemens SL10
Motorola V70 Samsung V200 Samsung
Motorola V70
Samsung V200
Samsung Pixon12 M8910
Some information about popular mobile phones
Some information about popular mobile phones
Top 10 popular phones
1. Apple iPhone 8S
2. HTC Desire S
3. НТС Sensation
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4. Samsung i9100 Galaxy S 8
5. Sony Ericsson – ST18 Xperia Ray
6. Nokia 603
7. Sony Ericsson WT19 Live
8. Samsung S5830 Galaxy Ace
9. Sony Ericson MT15 Xperia Neo
10. Samsung S5660 Galaxy GIO
Decision: there 2 the most popular companies
НТС Sensation HTC Desire S Apple iPhone 8S
НТС Sensation
HTC Desire S
Apple iPhone 8S
Observation The most important advantage is unrealistic display capabilities;
Observation
The most important advantage is unrealistic display capabilities;
A large viewing angle;
High build quality;
A big number of different programs and applications.
Opinions of scientists about mobile phones
Opinions of scientists about mobile phones
Pros
Make teenagers to switch to a healthy lifestyle.
Reason why there are no roaches in houses and flats(not proven).
Cons
Stress of the immune system (reduced resistance to disease and other harmful external influences).
Impair eyesight.
Impair hearing.
Disorders of memory and sleep.
May cause allergy to electromagnetic emission.
Opinions of psychologists about mobile phones
Opinions of psychologists about mobile phones
Pros
Don’t cause cancer.
Don’t cause headaches(the reason is bad ecology).
Don’t raise blood pressure.
Cons
May cause chronic insomnia.
May cause addiction.
The ways of protection
The ways of protection
At home and in the office use a landline phone
At home and in the office use a landline phone.
Use SMS more often.
Children and teenagers under the age of 16 should use cell phones only when absolutely necessary.
Pregnant women should not use a cell phone.
During the call to the subscriber does not hold the phone near the head.
During a call hold the device with three fingers for the lower part of the device.
Change the position of the handset during a conversation.
Avoid all kinds of plates, supposedly protects against emission.
Should not talk on a cell phone while driving a car, in tunnels, in metal garages.
My researches
My researches
Conclusions 1. Most of students have heard about the influence of mobile phones on human’s health
Conclusions
1. Most of students have heard about the influence of mobile phones on human’s health.
2. Teenager and adults use mobile phones differently.
3. The most popular phones should have wide displays, big variety of attachments and high build quality.
4. Principally mobile phones make harm to human’s health.
5. People should take measures to protect their health from electromagnetic emission.
Thank you for your attention.
Thank you for your attention.
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